Imperial College London Study: Precision-Fermented Milk Could Cut UK Dairy Land Use by Up to 96%
Researchers at Imperial College London have found that using precision-fermented milk might require up to 96% less land compared to traditional cow's milk. This cutting-edge technique involves genetically engineered microorganisms, like yeast and bacteria, in bioreactors that convert sugar-based materials into dairy-like proteins, creating a product that tastes like milk without using animals. While precision fermentation has been around for years, especially for cheese production, its use for milk and egg proteins is newer. The study focused on land use in the UK, revealing that replacing 20% of cow's milk with precision-fermented options could free up about 859,000 hectares (around 2.1 million acres) by 2050. A full shift could potentially clear 4.29 million hectares (10.6 million acres), roughly the size of Denmark, for purposes like forest restoration or alternative food production. The researchers stress the need for more studies to better understand the land and environmental impacts before ramping up production.
Key facts
- A new study from Imperial College London estimates precision-fermented milk could use up to 96% less land than conventional cow's milk
- Precision fermentation uses genetically engineered microorganisms such as yeast or bacteria grown in bioreactors to produce milk proteins from a sugar-based feedstock
- The technology has been used in food production for decades, including to make chymosin for cheesemaking
- Replacing 20% of UK cow's milk production could free approximately 859,000 hectares (about 2.1 million acres) of land by 2050
- Replacing all UK-produced cow's milk could release an estimated 4.29 million hectares (10.6 million acres), roughly comparable to mainland Denmark
- Released land could be used for restoring forests and peatlands, rewilding, or growing other food
- The study was published in Frontiers in Sustainable Food Systems
- Researchers say more study is needed to understand precision fermentation's land requirements and other environmental impacts at scale
Entities
Institutions
- Imperial College London
- Frontiers in Sustainable Food Systems
- Unsplash
Locations
- United Kingdom
- Denmark